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Thread: mep 804a not working.

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    Default mep 804a not working.

    I have two Mep 804a's. Ill call them Gen 1 and Gen 2. Gen 1 ran perfect, started easily put out the proper power, everything was fine. Gen 2 would not stay running and a low fuel light came on. I noticed the fuel gauge was broken on Gen 2 so i pulled it out of gen 1 and the problem went away but the over voltage light came on. So i put the fuel gauge back in gen 1 and the over voltage light is now comming on in it. Can somebody please help me with this? Both generators are low hour units.

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    3 Star General Dock Rocker's Avatar
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    Have you done any troubleshooting? Have you confirmed that it is actually in an overvoltage state with a meter?


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    Unless you are in an emergency situation, please do not use "HELP" in your thread title.

    Is your power out?
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    I have not done any trouble shooting yet but the generators wont stay running. as soon as I let off the start switch well after the oil pressure has built up it still cuts off. Im new to generators like this and have no idea where to start.

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    Have you downloaded the TM's?
    Can you use a multimeter?
    Can you read schematics?

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    Have not had time to read the tm's and yes I can use a multimeter and read schematics.

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    First step might be to look at the wires that go to the meter, on gen set 1. If it worked before you pulled the meter, it should have something to do with how you replaced it back into the Gen set 1. Lets try and get that set back to no problems, before we fool with gen set 2.

    The ground wire to MT5, (fuel meter) is 100AU. The hot wire is 175B.

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    I am curious on your choice of MEP 804a generators and your use for them. I also have two 804s to run my 3 phase equipment. These generators and larger sizes are not switchable between single and three phase so they are not as useful for backup power in most residential situations. Also, after starting with an over voltage light, do you clear it and it then comes back on? Mine will do that from time to time.

    Robert

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    4 Star General Guyfang's Avatar
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    Quote Originally Posted by robertsears1 View Post
    I am curious on your choice of MEP 804a generators and your use for them. I also have two 804s to run my 3 phase equipment. These generators and larger sizes are not switchable between single and three phase so they are not as useful for backup power in most residential situations. Also, after starting with an over voltage light, do you clear it and it then comes back on? Mine will do that from time to time.

    Robert
    Robert is correct. Sometimes you get a failure light, and its got to be cleared before going on.

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    Thank you. Im off this afternoon and i will take a look when i get home.

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